Quantitative Analysis of Efficiency Improvement of a Propulsion Drive by Using SiC Devices: A Case of Study

Table 4

Propulsion drive efficiency.

Number	Speed [rpm]	Torque [N·m]	With SiC MOSFET inverter (calculated) [%]	With Si IGBT inverter (calculated) [%]	With Si IGBT inverter (measured) [%]
1	1144	154	88.85	86.06	86.63
2	1246	63	92.45	89.04	87.81
3	1376	82	92.60	89.70	88.00
4	1394	142	90.20	88.18	87.20
5	1997	108	93.35	91.60	90.42
6	2006	37	93.65	90.79	90.12
7	2549	84	94.65	92.89	91.48
8	2785	115	94.75	93.28	93.28
9	2954	98	95.10	93.66	93.31
10	2984	51	94.85	93.07	92.68
11	3020	87	95.20	93.72	93.11
12	3142	48	94.95	93.09	92.17
13	3425	74	95.40	94.05	93.63
14	4709	23	94.15	92.16	92.01
15	4786	62	95.90	94.79	94.48
16	5067	48	95.25	94.30	93.80
17	5451	36	94.85	93.54	93.05
18	6018	33	94.55	93.31	93.59
19	6436	42	95.05	93.93	94.61
20	7128	42	95.15	94.04	93.38
21	7490	45	95.25	94.24	94.35
22	8186	47	95.40	94.41	95.23
23	8232	31	94.35	93.28	93.86
24	8270	24	93.85	91.73	92.65